US 12,075,313 B2
System and method for locating wireless accessories
Scott Lopatin, San Francisco, CA (US); Emmanuel Lalande, San Francisco, CA (US); Lawrence T. Lu, San Francisco, CA (US); Robert W. Mayor, Half Moon Bay, CA (US); Siva Ganesh Movva, Cupertino, CA (US); Raghunandan K. Pai, Saratoga, CA (US); Munish K. Poonia, San Jose, CA (US); Tommy Rochette, San Jose, CA (US); Sam Schaevitz, Los Gatos, CA (US); Yannick L. Sierra, San Francisco, CA (US); Navin Bindiganavile Suparna, Santa Clara, CA (US); and Langford Wasada, San Francisco, CA (US)
Assigned to Apple Inc., Cupertino, CA (US)
Filed by Apple Inc., Cupertino, CA (US)
Filed on Aug. 10, 2022, as Appl. No. 17/818,859.
Application 17/818,859 is a continuation of application No. 16/543,227, filed on Aug. 16, 2019, granted, now 11,641,563.
Claims priority of provisional application 62/738,983, filed on Sep. 28, 2018.
Prior Publication US 2022/0386076 A1, Dec. 1, 2022
Int. Cl. H04W 4/20 (2018.01); H04W 4/029 (2018.01); H04W 4/80 (2018.01); H04W 12/126 (2021.01); H04W 12/50 (2021.01); H04W 12/63 (2021.01)
CPC H04W 4/029 (2018.02) [H04W 4/80 (2018.02); H04W 12/126 (2021.01); H04W 12/50 (2021.01); H04W 12/63 (2021.01)] 21 Claims
OG exemplary drawing
 
1. A method comprising:
deriving, at a wireless accessory, a first public key;
transmitting at least one first beacon signal at a first frequency during a first period, wherein the first beacon signal includes the first public key, wherein the first frequency defines a beacon rate for transmission of each beacon signal during the first period;
determining a second frequency for transmission of at least one second beacon signal based on whether a response is received from an electronic device in response to the transmission of the first beacon signal, wherein the second frequency is a different beacon rate for transmission of each beacon signal than the first frequency;
deriving a second public key using a current timestamp; and
transmitting the second beacon signal at the second frequency during a second period, wherein the second beacon signal includes the second public key.